169 lines
6.2 KiB
Markdown
169 lines
6.2 KiB
Markdown
CONTENTS OF THIS FILE
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======================
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* Introduction
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* Version
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* Integration details
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* Driver files information
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* Supported sensor interface
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* Simple Integration Example
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INTRODUCTION
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=============
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- This package contains the Bosch Sensortec MEMS BME680 sensor driver (sensor API)
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- The sensor driver package includes below files
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* bme680.c
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* bme680.h
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* bme680_calculations.c
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* bme680_calculations.h
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* bme680_internal.h
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* sensor_api_common_types.h
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* BME680_SensorAPI_Optimization_Example_Guide_External.pdf
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VERSION
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========
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- Version of bme680 sensor driver is:
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* bme680.c - 2.0.0
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* bme680.h - 2.0.0
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* bme680_calculations.c - 2.0.0
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* bme680_calculations.h - 2.0.0
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* bme680_internal.h - 2.0.0
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* sensor_api_common_types.h - 2.0.0
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* BME680_SensorAPI_Example_Guide.pdf - 2.0.0
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INTEGRATION DETAILS
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====================
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- Integrate files bme680.c, bme680.h, bme680_calculations.c, bme680_calculations.h, bme680_internal.h,
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and sensor_api_common_types.h into your project.
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- User has to refer bme680.h to refer the API calls for the integration.
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- The BME680_SensorAPI_Example_Guide.pdf contains examples for API use cases.
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DRIVER FILES INFORMATION
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===========================
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bme680.h
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---------
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* This header file has the constant definitions, user data types and supported sensor driver calls declarations which is required by the user.
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bme680.c
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---------
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* This file contains the implementation for the sensor driver APIs.
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bme680_calculations.h
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----------------------
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* This header file has the internal function declaration for the sensor calculation.
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bme680_calculations.c
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----------------------
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* This file contains the implementation of the sensor calculations for sensor driver APIs.
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bme680_internal.h
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------------------
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* This header file has the register address definition, internal constant definitions.
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sensor_api_common_types.h
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--------------------------
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* This header file has the data type definition for different compiler platform.
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SUPPORTED SENSOR INTERFACE
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===========================
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- This BME680 sensor driver supports SPI and I2C interfaces
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Simple Integration Example
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===========================
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- A simple example for BME680 is given below.
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- Example meant for Single BME680 sensor in Force Mode with Temperature
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Pressure, Humidity and Gas Enabled
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- For further examples and details refer BME680_SensorAPI_Example_Guide.pdf
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- Please refer bme680.h to refer the API calls for the integration.
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/* include bme680 main header */
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#include "bme680.h"
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/*!
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* BME680_MAX_NO_OF_SENSOR = 2; defined in bme680.h file
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* In order to interface only one sensor over SPI, user must change the value of
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* BME680_MAX_NO_OF_SENSOR = 1
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* Test setup: It has been assumed that <20>BME680 sensor_0<5F> interfaced over SPI with
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* Native chip select line
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*/
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/* BME680 sensor structure instance */
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struct bme680_t bme680_sensor_no[BME680_MAX_NO_OF_SENSOR];
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/* BME680 sensor<6F>s compensated data structure instance */
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struct bme680_comp_field_data compensate_data_sensor[BME680_MAX_NO_OF_SENSOR][3];
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/* BME680 sensor<6F>s uncompensated data structure instance */
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struct bme680_uncomp_field_data uncompensated_data_of_sensor[BME680_MAX_NO_OF_SENSOR][3];
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/* BME680 sensor<6F>s configuration structure instance */
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struct bme680_sens_conf set_conf_sensor[BME680_MAX_NO_OF_SENSOR];
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/* BME680 sensor<6F>s heater configuration structure instance */
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struct bme680_heater_conf set_heatr_conf_sensor[BME680_MAX_NO_OF_SENSOR];
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void main(void)
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{
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unsigned int i = BME680_INIT_VALUE;
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enum bme680_return_type com_rslt = BME680_COMM_RES_ERROR;
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/* Do BME680 sensor structure instance initialization*/
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/* Sensor_0 interface over SPI with native chip select line */
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/* USER defined SPI bus read function */
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bme680_sensor_no[0].bme680_bus_read = BME680_SPI_bus_read_user;
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/* USER defined SPI bus write function */
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bme680_sensor_no[0].bme680_bus_write = BME680_SPI_bus_write_user;
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/* USER defined SPI burst read function */
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bme680_sensor_no[0].bme680_burst_read = BME680_SPI_bus_read_user;
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/* USER defined delay function */
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bme680_sensor_no[0].delay_msec = BME680_delay_msec_user;
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/* Mention communication interface */
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bme680_sensor_no[0].interface = BME680_SPI_INTERFACE;
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/* get chip id and calibration parameter */
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com_rslt = bme680_init(&bme680_sensor_no[0]);
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/* Do Sensor initialization */
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for (i=0;i<BME680_MAX_NO_OF_SENSOR;i++) {
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/* Check Device-ID before next steps of sensor operations */
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if (BME680_CHIP_ID == bme680_sensor_no[i].chip_id) {
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/* Select sensor configuration parameters */
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set_conf_sensor[i].heatr_ctrl = BME680_HEATR_CTRL_ENABLE;
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set_conf_sensor[i].run_gas = BME680_RUN_GAS_ENABLE;
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set_conf_sensor[i].nb_conv = 0x00;
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set_conf_sensor[i].osrs_hum = BME680_OSRS_1X;
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set_conf_sensor[i].osrs_pres = BME680_OSRS_1X;
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set_conf_sensor[i].osrs_temp = BME680_OSRS_1X;
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/* activate sensor configuration */
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com_rslt += bme680_set_sensor_config(&set_conf_sensor[i],
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&bme680_sensor_no[i]);
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/* Select Heater configuration parameters */
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set_heatr_conf_sensor[i].heater_temp[0] = 300;
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set_heatr_conf_sensor[i].heatr_idacv[0] = 1;
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set_heatr_conf_sensor[i].heatr_dur[0] = 137;
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set_heatr_conf_sensor[i].profile_cnt = 1;
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/* activate heater configuration */
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com_rslt += bme680_set_gas_heater_config(&set_heatr_conf_sensor[i],
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&bme680_sensor_no[i]);
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/* Set power mode as forced mode */
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com_rslt += bme680_set_power_mode(BME680_FORCED_MODE,&bme680_sensor_no[i]);
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if (BME680_COMM_RES_OK == com_rslt) {
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/*Get the uncompensated T+P+G+H data*/
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bme680_get_uncomp_data(uncompensated_data_of_sensor[i], 1, BME680_ALL,
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&bme680_sensor_no[i]);
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/*Get the compensated T+P+G+H data*/
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bme680_compensate_data(uncompensated_data_of_sensor[i],
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compensate_data_sensor[i], 1,
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BME680_ALL, &bme680_sensor_no[i]);
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/* put sensor into sleep mode explicitly */
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bme680_set_power_mode(BME680_SLEEP_MODE, &bme680_sensor_no[i]);
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/* call user define delay function(duration millisecond) */
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User_define_delay(100);
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}
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}
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}
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} |